CHAPTER 11 REPAIR OF STEERING SYSTEM

TM 10-3930-633-34

CHAPTER 11

R E P A I R OF STEERING SYSTEM

of the steering gear (in response to the turning of

11-1. General

the steering wheel) is transmitted to the front axle

The steering system

a. Steering System.

steering knuckles through the pitman arm and

consists of the steering wheel and column, the

drag link. The tie rod transmits the steering

steering gear and pitman arm, the drag link,

action from one steering knuckle to the other.

steering knuckles, and the tie rod. Refer to figure

11-1 for the layout of the steering system. Action

Figure 11-1. Steering System.

11-2. Tie Rod

b. Steering Gear. The recirculating ball type

gear consists of a "ball nut" connected to the

a. Adjustment (Front Wheel Toe-in). Front

steering worm and in mesh with the sector gear.

wheel toe-in should be set at zero. This is acheived

Precision finished helical grooves within the ball

by lengthening or shortening the tie rod as

nut match helical grooves in the worm. The ball

required to set the leading edges of the front tires

bearings roll within these grooves when the

at exactly the same width as the trailing edge.

steering wheel is turned. There are two complete

Proceed as follows to check and adjust.

circuits using tubular ball guides to deflect the

(1) Turn the front wheels to the exact

balls away from their helical path at one end of

straight-ahead position.

the grooves and guide them back to the other end.